"Upon learning of The New Yorker's decision to sever ties with Ryan Lizza in December, CNN pulled him from future on-air appearances while the network conducted an extensive investigation into the matter," a CNN spokesperson told The Hollywood Reporter on Thursday.

Ryan Lizza returned to work on Thursday, appearing on the Don Lemon show, following a sexual misconduct investigation by the network . (CNN)

"Based on the information provided and the findings of the investigation, CNN has found no reason to continue to keep Mr. Lizza off the air."

Lizza denied the allegations of sexual misconduct saying the incident was a "respectful" relationship with a woman he used to date.

"This decision, which was made hastily and without a full investigation of the relevant facts, was a terrible mistake," Lizza said in a statement at the time.

A lawyer for the victim of Lizza's alleged misconduct said in a statement in December that she wanted the TV personality to be held accountable.